/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.solr.update;

import org.apache.lucene.util.BytesRef;
import org.apache.lucene.util.CharsRef;
import org.apache.solr.common.SolrInputField;
import org.apache.solr.request.SolrQueryRequest;
import org.apache.solr.schema.IndexSchema;
import org.apache.solr.schema.SchemaField;

/**
 *
 */
public class DeleteUpdateCommand extends UpdateCommand {
	public String id; // external (printable) id, for delete-by-id
	public String query; // query string for delete-by-query
	public BytesRef indexedId;
	public int commitWithin = -1;

	public DeleteUpdateCommand(SolrQueryRequest req) {
		super(req);
	}

	@Override
	public String name() {
		return "delete";
	}

	public boolean isDeleteById() {
		return query == null;
	}

	public void clear() {
		id = null;
		query = null;
		indexedId = null;
		version = 0;
	}

	/**
	 * Returns the indexed ID for this delete. The returned BytesRef is retained
	 * across multiple calls, and should not be modified.
	 */
	public BytesRef getIndexedId() {
		if (indexedId == null) {
			IndexSchema schema = req.getSchema();
			SchemaField sf = schema.getUniqueKeyField();
			if (sf != null && id != null) {
				indexedId = new BytesRef();
				sf.getType().readableToIndexed(id, indexedId);
			}
		}
		return indexedId;
	}

	public String getId() {
		if (id == null && indexedId != null) {
			IndexSchema schema = req.getSchema();
			SchemaField sf = schema.getUniqueKeyField();
			if (sf != null) {
				CharsRef ref = new CharsRef();
				sf.getType().indexedToReadable(indexedId, ref);
				id = ref.toString();
			}
		}
		return id;
	}

	public String getQuery() {
		return query;
	}

	public void setQuery(String query) {
		this.query = query;
	}

	public void setIndexedId(BytesRef indexedId) {
		this.indexedId = indexedId;
		this.id = null;
	}

	public void setId(String id) {
		this.id = id;
		this.indexedId = null;
	}

	@Override
	public String toString() {
		StringBuilder sb = new StringBuilder(super.toString());
		if (id != null)
			sb.append(",id=").append(getId());
		if (indexedId != null)
			sb.append(",indexedId=").append(getId());
		if (query != null)
			sb.append(",query=`").append(query).append('`');
		sb.append(",commitWithin=").append(commitWithin);
		sb.append('}');
		return sb.toString();
	}

}
